bagshaw



April 30, .1929. c. M. BAGsHAw Y PULLING OVER MACHINE Filed 001'.. 18, 1924 3 Sheets-Shea?I l '//V//fA/m? Chmies M. Bogshuw April 30, 1929. C, M BAGSHAW 1,711,439

PULLI-NG OVER MACHINE Filed Oct. 18, 1924 3 Sheets-Sheet 2 /fvrvmfe Charles M. Bogshuw f (5y 3 Sheets-Sheet 5 Filed OC.. 18, 1924 /A/VE/VP Charles M. Bugshow Patented Apr. 30, 1929.

UNITED STATES PATENT OFFICE.

CHARLES MARTIN BAGSHAW, 0F LEICESTER, ENGLAND.

PULLING-OVER MACHINE.

Application filed October 18, 1924, Sierial No. 744,336, and in Great Britain October 30, 1923.

This invention has reference to improvements in and relating to pulling-over machines of the type in which the toe and side pincers are carried by rocking-frames to which, after the pincers have put the desired tension on the upper, rocking movement is imparted whereby the pincers are moved so as to lay the marginal portion of the upper against the sole ot' the last (or the insole on the last), tack supplying and driving meansbeing simultaneously brought into appropriate positions whereby the upper is secured in pulled-over condition on the last. After the pinchers have automatically been made to release the upper and the upper has been secured in pulled-over condition on the last, the parts are automatically returned to their initial positions ready for operating on another shoe. A constructional form ot the aforesaid type of pulling-over machine is described in the specification of British Letters Patent No. 3,876/14 and in British Patent No. 164,777.

An important object oi my present invention is an improved pincers supporting and controlling means that possesses important practical advantages hereinafter pointed out.

My invention is illustrated in the accompanying drawings as applied to one ofthe usual several pairs ot pineers ot a pullingover machine, in which drawings Fig. 1 is a side elevation showing one pair ot side pincers and their supporting and controlling means in the initial or starting position with the marginal portion of the upper inserted. Fig. 2 a similar view with the parts in the position after the pincers have put tension on the upper; and Fig. 3 is' a similar view with the parts in th position a'lfter the marginal portion oli the upper has been laid under the edge of the last and secured in lasted condition.

In said drawings the numeral 6 indicates thc rocking-frame which is provided with trunnions as at 7 that are supported in bearings such as 5, carried by the main frame of the machine. rIhe rocking-frame is provided with a tack-receiving pocket 8 closed at its lower end by the tack driver 9 which is mounted on a vertically slidable bar 10 to which, through a thrust rod 11, upward movement is imparted at the appropriate time to drive the tack whereby the upper is secured in pulled-over condition. The tacks are supplied 'from the usual tack drums (not shown) through flexible tubes 12 connected up with a tack-passage 13 in a spring-pressed clamping plate 14 (Fig. 3), the said tack-passage and pocket being in communication when the rocking-frame is in its initial or starting position. The last it is carried on a support 15. After the upper has been tensioned, as will bc described, the rocking-frame 6 is swung on its trunnions T to bringl 'the marginal portion of the upper under the edge of the last (at the appropriate time the upper will be released by the pino-ers as will be described) and the upper will be held against springing bac-lr when the pincers have released it by the clamping plate 14C (Fig. lVl'ien the upper has been secured, the parts are automatically returned to their normal or starting positions. foregoing is a brief description of the operation oi' the machine and a detailed description ot the mechanism (which forms no part of the present invention) may be had from the speciiications ot the patents referred to. The said prior speciiications also clearly describe and illustrate three sets of pincers, one for the extreme toe andthe other two for the sides ot the last at or near the tip line and as the arrangen'ient of the three sets of pincers will be similar in car 'ying out my present invention it will suiiice if I illustrate my invention as applied to one pair of pincers, it being understood that my invention is to be applied to all the pincers.

In accordance with myinvention the pincers 1T are pivotally carried at 18 by a comparativeiy long arm 19 that in turn is pivotally arried at 20 by the rocking-tramei6. Said arm has a lug` 2l to which one end oi: strong spring 2 is attached, the other end of the spring being attached to a pin 23 on the rocking-iframe C. Said spring acts normally to maintain the free or pincers carrying end 0l the arm 19 in its raised position, an adjustable stop 24 being provided to permit regulation oi this. A spring 25 tends to open the pincers.

The depending shanks 26 of the pincers jaws are shaped so that a roll 27 may be received between them, the extreme ends converging so that, if the roll 27 be moved downwardly with respect to the pivot 18, the pincers jaws will be closed, and the dimensions of the parts are such that the said eXtreme ends will prevent the roll 27 disconnecting :trom the pincers even when the pincers jaws are closed together without the presence between them ot the marginal portion of the upper.

The I Cil The roll 27 is carried by a tension rod Q8 that is connected-preterably through a spring cushion in the known manner-to .any known suitable either power or manuall i operated means whereby tension toibo applied to the upper.

'l`he arm 1l) is provided with a lug` or lugs 2Q carrying a pivot pin 30 on which is mounted a rocking' bar 31. One end of said rocl;- ing;I bar extends through a slot 32 in the tension rod :25%, and whe other end connected by a vlink 33 to oneend oi' an.actiiatingl bar Y, piroted on a pivot piu Si?) on the roel Llrauie, and -the other cud ol which re L and extends beyond a block 23o that carries the iliunnions l referred lo.

irdapted to en je the ef-tendinjl` end of the actuating' bar lis a vertically movable plunger il? which is normally in the position about as shown in Figs. 1 and 2 but which is raised by a cam or other n'ioving part of the machine at the appropriate time so as to lift the extending end of the actuating,l bar Bil, about as shown in Fig. 3.

The parts described serve in the first instance to close the pincers so as lirmly to grip the previously inserted marginal portion of the upper, than to move them to put tension on the upper, and, at the appropriate moment, e. g., when the upper (previously pulled over the last) is held firmly against the corner of the last by the clamiriing-plate 151 to cause the oincers to release their hold on the upper (without allowing,v the pincers to rise until all the parts of the machine are returned to their normal position).

The operation of my improved pincers closingl and opening means is as follows In Fig. 1 the rpincers 17 are in the raised position ready to receive the marginal por tion. of the upper 3. lllhen tension is applied to the tension rod Q8, the roll 2? will be moved downwards relatively tothe pivot 18. The said pivot, and consequently the pincel-s 117 also, are maintained in their raised position by reas-ton of the tension ot the spring; 22 acting' on the pincers carrying; arm l, until Vthe liincers are closed and more or less l'irnily grip the marginal portieri o'i the upper. Alfter this. continued downward movement oi the tension rod will cause the pineers to follow, the `pincers carrying arm 19 swinging' about its pivot 20, and thus put tension on the upper. The position oi' the pincers and related parts when tension has been put on the upper, is shown in Q, where it will be seen that the rocking' bar 31 has moved down with the arm 19 and has maintained its position ol substantial parallelism with said bar.

After this the rocking-frame will be swung' in the direction to place the marginal portion oi the upper under the edge oit the last (as described in the prior specifications referred to) and when the clamping-plate 14 lirmly presses the upper against the corner oi' `the last, the plunger 37 is raised, and this will rock the actuating bar 3l about its pivot Owing to the linl connection 33, the aforesaid movement oit' the actuating; bar will bring about a rocking' movement of the rockingl bar 31 on its pivot il() and, utilizing said pivot as a fulcrum, will cause the free end of the rocking; bar to engage against the upper end of the slot 32 in the tension rod 28 and litt said rod whilst the arm 19 and consequently the pincers 17 remain in situ. By this up 'ward movement ot the tension rod Q8, and consequently of the roll 2? relatively with respect to the converging' ends the pincers shanlis, the pincers will be tree to be opened by their springl 25.

lt is to be obserifed that at no Ytir-.ie is the tension rod with its roll 2'? disconnected from the pincers.

lis already stated, each pair ot pincers will he constructed and provided with the improved actuating and controlling mechanism .s 'lf-ed, and, as the extending` end of each actiuil'ing,l bar such as Bl will project over the plunger 37, all the pincers will be released simultaneously7 or practically so.

lllhat l claim is 1. a pullingover machine, a pincerscarrying` arm, pincers carried thereby, means to actuate the arm and close the pincers, and a. rockingl bar pivoted said arm and en able with said mea-insito cause the pi eers to release its grip on the work.

2. ln a pulling-over machine, a pincerscarrying` arm, pincers carried thereby, means to actuate the arm and close the pincers, a rocking arm pivoted to the arm and engageable with said means, a pivotally supported actuating` bar connected up with said rocking bar and by itsmovement shifting' the rooling bar to cause release of the pincers, and means to aetuate the actuating` bar.

3. In a pulling-over machine, a pincerscarrying arm, pincerscarried thereby, a tension rod 'tor closing the pincers, a rocking,` bar pivotcd to said arm and operatively connected to said rod, and means to roel: said rocking bar thereby to release the grip of the pincers.

ll. .T n a pulling-over machine, a pincerscarrying arm, pincers pivotally supported by said arm and having` converging` Shanks, a roll between said shrinks, means to cause the roll to act on said shanlfzs thereby to close the pincers, a rocking bar carried by said arm and operatively connected up with said roll, and means to actuate the rockingv bar thereby to shift the roll into a position to release the grip ot the pincers on the work.

In a pulling-over machine, a pincers carrying arm, means to normally hold said arm in raised position, pincers carried by said arm and having converging Shanks, a tension rod having a slot and carrying a roll that is enga-ged between said shanls, a roclzlllf lltl

iso

ing frame to which said arm is pivoted, a pair of rocking bars, one pivotally mounted on said arm and one end of which engages the slot in the tension rod and the other of which is pivotally mounted on said rocking frame, a link connecting said bars, and a vertically movable plunger to actuate the bars, all for the purpose described.

6. In a machine of the class described, a pivoted pincers support, pincers carried by the 'lree end of said support, means normally holding said free end and the pincers in raised position, a member permanently operatively connected to the pincers but movable relatively thereto for closing the pincers and allowing them to be released, a rocking bar carried by said supportand engaging said member for releasingl the pincers, and means to rock said bar.

7. In a machine of the class described, a rocking frame, a lever pivotally mounted on said frame, pincers carried by the free end of said lever, means normally holding the lever and pincers in raised position, a slotted member operatively connected with sailL pincers and having a limited movement relatively thereto, the initial downward movements of said member closing the pincers and continued downward movement giving a pulling movement to the pincers, a rocking lever mounted on the pivoted lever and engaging in the slot in said member, a rocking bar mounted on said frame and connected by a link to the rocking lever, and a plunger to engage the rocking bar and to rock it about its support thereby to move said member and release the grip of the pincers.

8. In a machine of the class defined, a rocking frame, a pincers-carrying lever pivoted on said frame, means to maintain the free end of said lever normally raised, pincers comprising independently movable jaws having depending converging Shanks carried by said lever, a slotted link operatively connected with said shanks to close the pincers and to move the lever, a rocking bar on said lever in engagement With said link, and a plunger to actuate said rocking bar to open the pincers.

9. In a machine of the class delined, a rocking frame, a lever pivoted at one end on said iframe, pincers comprising independently movable jaws having depending converging shanks pivoted on the free end of said lever, means to maintain the 'free end of said lever and the pincers normally raised, means to determine the highest position of the pincers, and means to close and to open the pincers.

lO. In a machine of the class delined, a Work support, a rocking frame, a lever pivotally connected at one end to said frame and adapted for movement at its free end towards and from the support, means to move the lever normally towards the support, pincers on said lever, a rocking bar on said lever, a second rocking bar on the frame, and means operating through said rocking bars to actuate the pincers.

CHARLES MARTIN BAGSHAW. 

